MHT CET 2024 Physics question
A current carrying loop of radius 'R' and current carrying long straight wire are placed in the same plane. and are the currents through circular loop and long straight wire respectively. The perpendicular distance between centre of the circular loop and wire is 'd'. The magnetic field at centre of the loop will be zero when separation 'd' is equal to
Answer: (A)
Solution
At the centre of the circular loop the field is , perpendicular to the plane. The long straight wire in the same plane produces at the centre (distance ) a field , also perpendicular to the plane. For the net field to be zero the two
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